Image 3 (IMAGE) Florida Museum of Natural History Caption Container vessels dramatically increased in size and number during the 20th century, and the Panama Canal had to be expanded to keep pace with the acceleration of global shipping. Credit Florida Museum photo by Jeff Gage Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.